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Diffstat (limited to 'include/uapi/asm-generic/fcntl.h')
| -rw-r--r-- | include/uapi/asm-generic/fcntl.h | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h new file mode 100644 index 0000000000..80f37a0d40 --- /dev/null +++ b/include/uapi/asm-generic/fcntl.h @@ -0,0 +1,221 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +#ifndef _ASM_GENERIC_FCNTL_H +#define _ASM_GENERIC_FCNTL_H + +#include <linux/types.h> + +/* + * FMODE_EXEC is 0x20 + * FMODE_NONOTIFY is 0x4000000 + * These cannot be used by userspace O_* until internal and external open + * flags are split. + * -Eric Paris + */ + +/* + * When introducing new O_* bits, please check its uniqueness in fcntl_init(). + */ + +#define O_ACCMODE 00000003 +#define O_RDONLY 00000000 +#define O_WRONLY 00000001 +#define O_RDWR 00000002 +#ifndef O_CREAT +#define O_CREAT 00000100 /* not fcntl */ +#endif +#ifndef O_EXCL +#define O_EXCL 00000200 /* not fcntl */ +#endif +#ifndef O_NOCTTY +#define O_NOCTTY 00000400 /* not fcntl */ +#endif +#ifndef O_TRUNC +#define O_TRUNC 00001000 /* not fcntl */ +#endif +#ifndef O_APPEND +#define O_APPEND 00002000 +#endif +#ifndef O_NONBLOCK +#define O_NONBLOCK 00004000 +#endif +#ifndef O_DSYNC +#define O_DSYNC 00010000 /* used to be O_SYNC, see below */ +#endif +#ifndef FASYNC +#define FASYNC 00020000 /* fcntl, for BSD compatibility */ +#endif +#ifndef O_DIRECT +#define O_DIRECT 00040000 /* direct disk access hint */ +#endif +#ifndef O_LARGEFILE +#define O_LARGEFILE 00100000 +#endif +#ifndef O_DIRECTORY +#define O_DIRECTORY 00200000 /* must be a directory */ +#endif +#ifndef O_NOFOLLOW +#define O_NOFOLLOW 00400000 /* don't follow links */ +#endif +#ifndef O_NOATIME +#define O_NOATIME 01000000 +#endif +#ifndef O_CLOEXEC +#define O_CLOEXEC 02000000 /* set close_on_exec */ +#endif + +/* + * Before Linux 2.6.33 only O_DSYNC semantics were implemented, but using + * the O_SYNC flag. We continue to use the existing numerical value + * for O_DSYNC semantics now, but using the correct symbolic name for it. + * This new value is used to request true Posix O_SYNC semantics. It is + * defined in this strange way to make sure applications compiled against + * new headers get at least O_DSYNC semantics on older kernels. + * + * This has the nice side-effect that we can simply test for O_DSYNC + * wherever we do not care if O_DSYNC or O_SYNC is used. + * + * Note: __O_SYNC must never be used directly. + */ +#ifndef O_SYNC +#define __O_SYNC 04000000 +#define O_SYNC (__O_SYNC|O_DSYNC) +#endif + +#ifndef O_PATH +#define O_PATH 010000000 +#endif + +#ifndef __O_TMPFILE +#define __O_TMPFILE 020000000 +#endif + +/* a horrid kludge trying to make sure that this will fail on old kernels */ +#define O_TMPFILE (__O_TMPFILE | O_DIRECTORY) + +#ifndef O_NDELAY +#define O_NDELAY O_NONBLOCK +#endif + +#define F_DUPFD 0 /* dup */ +#define F_GETFD 1 /* get close_on_exec */ +#define F_SETFD 2 /* set/clear close_on_exec */ +#define F_GETFL 3 /* get file->f_flags */ +#define F_SETFL 4 /* set file->f_flags */ +#ifndef F_GETLK +#define F_GETLK 5 +#define F_SETLK 6 +#define F_SETLKW 7 +#endif +#ifndef F_SETOWN +#define F_SETOWN 8 /* for sockets. */ +#define F_GETOWN 9 /* for sockets. */ +#endif +#ifndef F_SETSIG +#define F_SETSIG 10 /* for sockets. */ +#define F_GETSIG 11 /* for sockets. */ +#endif + +#if __BITS_PER_LONG == 32 || defined(__KERNEL__) +#ifndef F_GETLK64 +#define F_GETLK64 12 /* using 'struct flock64' */ +#define F_SETLK64 13 +#define F_SETLKW64 14 +#endif +#endif /* __BITS_PER_LONG == 32 || defined(__KERNEL__) */ + +#ifndef F_SETOWN_EX +#define F_SETOWN_EX 15 +#define F_GETOWN_EX 16 +#endif + +#ifndef F_GETOWNER_UIDS +#define F_GETOWNER_UIDS 17 +#endif + +/* + * Open File Description Locks + * + * Usually record locks held by a process are released on *any* close and are + * not inherited across a fork(). + * + * These cmd values will set locks that conflict with process-associated + * record locks, but are "owned" by the open file description, not the + * process. This means that they are inherited across fork() like BSD (flock) + * locks, and they are only released automatically when the last reference to + * the the open file against which they were acquired is put. + */ +#define F_OFD_GETLK 36 +#define F_OFD_SETLK 37 +#define F_OFD_SETLKW 38 + +#define F_OWNER_TID 0 +#define F_OWNER_PID 1 +#define F_OWNER_PGRP 2 + +struct f_owner_ex { + int type; + __kernel_pid_t pid; +}; + +/* for F_[GET|SET]FL */ +#define FD_CLOEXEC 1 /* actually anything with low bit set goes */ + +/* for posix fcntl() and lockf() */ +#ifndef F_RDLCK +#define F_RDLCK 0 +#define F_WRLCK 1 +#define F_UNLCK 2 +#endif + +/* for old implementation of bsd flock () */ +#ifndef F_EXLCK +#define F_EXLCK 4 /* or 3 */ +#define F_SHLCK 8 /* or 4 */ +#endif + +/* operations for bsd flock(), also used by the kernel implementation */ +#define LOCK_SH 1 /* shared lock */ +#define LOCK_EX 2 /* exclusive lock */ +#define LOCK_NB 4 /* or'd with one of the above to prevent + blocking */ +#define LOCK_UN 8 /* remove lock */ + +/* + * LOCK_MAND support has been removed from the kernel. We leave the symbols + * here to not break legacy builds, but these should not be used in new code. + */ +#define LOCK_MAND 32 /* This is a mandatory flock ... */ +#define LOCK_READ 64 /* which allows concurrent read operations */ +#define LOCK_WRITE 128 /* which allows concurrent write operations */ +#define LOCK_RW 192 /* which allows concurrent read & write ops */ + +#define F_LINUX_SPECIFIC_BASE 1024 + +#ifndef HAVE_ARCH_STRUCT_FLOCK +struct flock { + short l_type; + short l_whence; + __kernel_off_t l_start; + __kernel_off_t l_len; + __kernel_pid_t l_pid; +#ifdef __ARCH_FLOCK_EXTRA_SYSID + __ARCH_FLOCK_EXTRA_SYSID +#endif +#ifdef __ARCH_FLOCK_PAD + __ARCH_FLOCK_PAD +#endif +}; + +struct flock64 { + short l_type; + short l_whence; + __kernel_loff_t l_start; + __kernel_loff_t l_len; + __kernel_pid_t l_pid; +#ifdef __ARCH_FLOCK64_PAD + __ARCH_FLOCK64_PAD +#endif +}; +#endif /* HAVE_ARCH_STRUCT_FLOCK */ + +#endif /* _ASM_GENERIC_FCNTL_H */ |